Lockhart is charged with murdering Shane Tatro, 38, on Sept. 16. He faces up to 60 years to life in prison if convicted.

Investigators found 114 pounds of marijuana, five firearms and an intricate surveillance system — with five cameras and two live feeds — at Lockhart’s home on Walnut Street in Ramona, Deputy District Attorney John Pro said.

Pro said Lockhart told investigators that Tatro had come to his home to buy pot, but he refused to sell it to Tatro because he was a stranger.

As Tatro drove away, Lockhart noticed a surveillance camera had been tampered with. He yelled at Tatro to come back, which he did.

The confrontation turned physical. During the struggle, one of Lockhart’s sons handed a 12-gauge shotgun to his father, Pro said.

Lockhart told investigators he punched Tatro off him, then fired, Pro said. Tatro was hit in the abdomen and died later that day.